screenshot

A command-line tool that captures an image of a website URL or local route. It can use a mobile-sized viewport and can skip authentication for public pages.

In plain words
What is it for?
Use it to capture routes, login or public pages, and mobile layouts for visual verification.
Why use it?
It removes the need to take screenshots manually when checking how a page looks.

Skill for Claude CodeCodex

Part of the react-developer plugin — 4 skills, 1 agent shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/makigjuro/cloudstack-ai-plugins/screenshot
Any agent
npx skills add makigjuro/cloudstack-ai-plugins --skill screenshot
Clone the repo
git clone --depth 1 https://github.com/makigjuro/cloudstack-ai-plugins

Made for: Claude Code, Codex.

Or install react-developer, the plugin that ships this one along with the rest of its 4 skills, 1 agent.

Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,020 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00058 $0.01020
Opus 5 $0.00029 $0.00510
Sonnet 5 $0.00012 $0.00204
Haiku 4.5 $0.00006 $0.00102

Measured 2d ago against content hash 0bf111f8334a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

screenshot scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/react-developer/skills/screenshot/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Screenshot

Capture a screenshot of a URL or route. Nothing else — no tables, no analysis, just the image.

Arguments

  • {url-or-route} — URL or route path (default: /). If starts with /, prepends http://localhost:{DEV_PORT}.
  • --mobile — Resize viewport to 375x667 (iPhone SE) before capturing
  • --no-auth — Skip authentication (use for login page or public pages)

Configuration

Read cloudstack.json from the project root at the start of execution. Extract:

  • FRONTEND_PATH = frontend.path (default: web)
  • DEV_PORT = frontend.devPort (default: 5173)
  • UI_LIBRARY = frontend.uiLibrary (default: shadcn)
  • STATE_SERVER = frontend.stateManagement.server (default: tanstack-query)
  • STATE_CLIENT = frontend.stateManagement.client (default: zustand)
  • MULTI_TENANT = backend.multiTenancy (default: false)

If cloudstack.json does not exist, auto-detect by checking package.json dependencies.

Auth Configuration

Check cloudstack.json for localDev.authConfig:

{
  "localDev": {
    "authConfig": {
      "storageKey": "auth-storage",
      "state": {
        "isAuthenticated": true,
        "token": "dev-token"
      }
    }
  }
}

If localDev.authConfig is not present, use a generic dev auth pattern:

  1. Check for an auth store file (e.g., auth-store.ts, useAuthStore.ts) to find the localStorage key and expected shape
  2. Fall back to injecting: localStorage.setItem('auth-storage', JSON.stringify({ state: { isAuthenticated: true }, version: 0 }))

Process

Step 1: Resolve URL

If the argument starts with /, prepend http://localhost:{DEV_PORT}. Otherwise use the full URL as-is.

Step 2: Authenticate (unless --no-auth)

Skip this step if --no-auth is passed or the URL is not on localhost:{DEV_PORT}.

Navigate to http://localhost:{DEV_PORT} first to establish the origin, then inject auth via localStorage.

If localDev.authConfig is defined in cloudstack.json, use that directly:

localStorage.setItem('{storageKey}', JSON.stringify({authConfig.state}))

Read the full file on GitHub · 107 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 107 lines · 58 tokens per session scan A 0bf111f8334a

Subscribe to this mod's changes

screenshot is a skill published in the GitHub repository makigjuro/cloudstack-ai-plugins (1 stars, last pushed 1mo ago), licensed MIT. It adds 58 tokens to every session and 1,020 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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